You experience slow performance when you use a Microsoft
Windows Forms application. When you view the Performance Monitor (PerfMon)
counters, you notice that the value of the following counter is high:
.NET CLR Memory - # Induced GC
Note Unless you call
GC.Collect() explicitly, a typical WinForms application should have a
# Induced GC count close to zero. This hotfix is applicable in the event where the counter reaches several hundred counts within a few minutes after the Windows Forms application starts up.
This problem may occur if the Windows Forms runtime is
making extra calls to the garbage collector.
The Windows Forms
runtime tracks all outstanding GDI Device Contexts. The Windows Forms runtime
also has an internal mechanism to force garbage collection if the number of
outstanding GDI Device Contexts is higher than a predetermined threshold. This
system aggressively deletes nonessential objects when resources are scarce on some
operating systems.
This behavior causes slow performance if the
outstanding GDI Device Context count is not valid and the count causes the
Windows Forms runtime to make extra calls to the garbage
collector.
Software update information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 1.1 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
Software update file information
The English version of this software
update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------------------------
13-Nov-2003 9:44 1.1.4322.969 2,039,808 System.Windows.Forms.dll
13-Nov-2003 9:43 1.1.4322.969 1,703,936 System.Design.dll
13-Nov-2003 9:38 1.1.4322.969 466,944 System.Drawing.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
You can monitor the extra calls to the garbage collector
by identifying an unexpected increase in the .NET CLR Memory - # Induced GC
PerfMon counter.
For additional
information about how to use PerfMon, click the following article number to
view the article in the Microsoft Knowledge Base:
248345Â
(http://kbalertz.com/Feedback.aspx?kbNumber=248345/
)
How to create a log using System Monitor in Windows 2000
For
additional information about the terminology that is used to describe Microsoft
product updates, click the following article number to view the article in the
Microsoft Knowledge Base:
824684Â
(http://kbalertz.com/Feedback.aspx?kbNumber=824684/
)
Description of the standard terminology that is used to describe Microsoft software updates